EP2952365B1 - Passage tournant pour roue de véhicule - Google Patents

Passage tournant pour roue de véhicule Download PDF

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Publication number
EP2952365B1
EP2952365B1 EP15168971.8A EP15168971A EP2952365B1 EP 2952365 B1 EP2952365 B1 EP 2952365B1 EP 15168971 A EP15168971 A EP 15168971A EP 2952365 B1 EP2952365 B1 EP 2952365B1
Authority
EP
European Patent Office
Prior art keywords
lubricant
compressed air
wheel hub
space
annular
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15168971.8A
Other languages
German (de)
English (en)
Other versions
EP2952365A2 (fr
EP2952365A3 (fr
Inventor
Günter Bittlingmaier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kessler and Co GmbH and Co KG
Original Assignee
Kessler and Co GmbH and Co KG
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Filing date
Publication date
Application filed by Kessler and Co GmbH and Co KG filed Critical Kessler and Co GmbH and Co KG
Publication of EP2952365A2 publication Critical patent/EP2952365A2/fr
Publication of EP2952365A3 publication Critical patent/EP2952365A3/fr
Application granted granted Critical
Publication of EP2952365B1 publication Critical patent/EP2952365B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0073—Hubs characterised by sealing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00345—Details of the rotational joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0047—Hubs characterised by functional integration of other elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00309—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors
    • B60C23/00318—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors on the wheels or the hubs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00309—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors
    • B60C23/00336—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by the location of the components, e.g. valves, sealings, conduits or sensors on the axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00354—Details of valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00363—Details of sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/001—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving
    • B60C23/003—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres
    • B60C23/00372—Devices for manually or automatically controlling or distributing tyre pressure whilst the vehicle is moving comprising rotational joints between vehicle-mounted pressure sources and the tyres characterised by fluid diagrams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
    • F16L27/087—Joints with radial fluid passages

Definitions

  • the invention relates to a rotary feedthrough for a motor vehicle wheel with tire pressure control.
  • a wheel of a motor vehicle usually has a wheel hub which is rotatably mounted on a wheel carrier (for example, knuckle or axle funnel).
  • a tire pressure regulating device is provided to adjust the air pressure in the tire mounted on the wheel hub to a desired value.
  • it In order to be able to supply the compressed air required for this purpose to the tire, it must be transferred, for example, starting from a central compressed air source, from the respective wheel carrier to the wheel hub mounted thereon. The same applies in the opposite direction for emptying the tire.
  • the rotary feedthrough which has a substantially annular space between the wheel carrier and the wheel hub, in which a compressed air annulus is formed.
  • a compressed-air annulus formed in the space between the wheel carrier and the wheel hub must be reliably sealed against the environment and in particular with respect to the remaining gap.
  • sealing rings in particular Radial shaft sealing rings, carried out, which delimit the compressed air annulus on both sides and in particular seal against formed in the remaining space formed lubricant annular spaces, which may serve for example, the lubrication of the sealing rings and / or bearings for supporting the wheel hub on the wheel.
  • Tire pressure control systems may be, for example, single-channel, i. with only a single leading to the valve compressed air channel in the wheel hub, or multi-channel, in particular two-channel, be formed.
  • an additional compressed air channel in the wheel hub serves to control the switching position of the valve.
  • Two-channel systems have the advantage that a standard valve can be used on the tire whose air pressure is to be controllable.
  • a standard valve usually has a compressed air connection and a working connection (2/2-way valve) and possibly a venting connection (3/2-way valve).
  • the valve can also have a control connection, which is actuated via the additional compressed air channel.
  • the valve can optionally be actuated to connect the compressed air connection or the vent connection to the working connection for the passage of compressed air or to block these connections against each other.
  • the valve is biased in a blocking state to to maintain the tire pressure in the event of a pressure or force failure at the control port.
  • the rotary feedthrough must have at least two compressed air channels in the wheel hub, so that in the space between the wheel and the hub and at least two compressed air annular spaces must be formed to the compressed air channels of the hub with associated compressed air channels to connect the wheel carrier.
  • These compressed air annular spaces which may have very different pressures must be reliable and in particular also sealed against each other, such as by between them and on the two sides of respective sealing rings are provided.
  • lubricant such as grease or lubricating oil can be passed through lubricant channels from the wheel into lubricant annular spaces in the said space between the wheel and the hub in addition to the compressed air Ring rooms are provided.
  • the lubricant can reach the respective sealing rings limiting the respective lubricant annulus.
  • the wear but not the relatively high number of wearing parts can be reduced.
  • such an arrangement requires a relatively large overall depth (extension of said gap along the arrangement direction of the sealing rings).
  • the object of the present invention is to provide a rotary feedthrough with a simple and compact design, which is low-wear and inexpensive.
  • a rotary feedthrough with the features of claim 1 and in particular in that in a space between the wheel and the hub, a compressed air annulus and at least one lubricant annulus are formed, which are sealed against each other, wherein the compressed air annulus communicates with a compressed air passage of the wheel carrier and with a compressed air passage of the wheel hub, wherein the compressed air passage of the wheel hub further communicates with a controllable valve to selectively fill or empty a tire of the vehicle wheel with compressed air, and wherein the lubricant annulus with a lubricant passage of the wheel carrier and communicates with a lubricant passage of the wheel hub, wherein the lubricant passage of the wheel hub leads to a control port of the valve to selectively control the valve for the passage of compressed air.
  • the said controllable valve may be a standard valve as described above, which is simple and inexpensive.
  • the compressed air passage of the wheel hub can supply compressed air to the compressed air port of the valve, while the valve can be controlled via the pressure applied to the control port (directly or indirectly) pressure of the lubricant, which is supplied to the control port through the lubricant channel of the wheel hub.
  • the rotary feedthrough according to the invention is a two-channel system, the two channels, however, differ from other two-channel systems in that one channel carries compressed air, the other channel but lubricant.
  • the overall depth of the rotary feedthrough i. Their expansion relative to the (radial and / or axial) gap between the wheel carrier and the wheel hub, comparatively low and be comparable to the depth of a single-channel solution.
  • the formation of a single compressed air annulus in said space is sufficient.
  • the second channel of the wheel hub is not a compressed air channel, but a lubricant channel, a lubricant annular space can be used to supply the second channel and thus to control the valve instead of another compressed air annulus, which in the said space for sealing the compressed air annulus typically present anyway.
  • the compressed air annulus for supplying the one (compressed air) channel of the wheel hub and the lubricant annulus for supplying the other (lubricant) channel of the wheel hub directly adjacent to each other. In this way, the overall depth of the rotary feedthrough is minimized and contributes to a compact design of the rotary feedthrough.
  • the lubricant annulus can be supplied by the lubricant channel of the wheel carrier in particular with lubricating oil or grease or other lubricant.
  • This lubricant can serve to lubricate sealing elements such as sealing rings, in particular radial shaft seals, for sealing the compressed air annulus, so that they seal reliably and are protected against premature wear.
  • the lubricant can also serve as a pressure medium in addition to this function, the pressure can be adjusted, for example, Radmonograph mineral and over the space between the wheel and the wheel hub away by means of the lubricant channel of the wheel hub can be transferred to the valve to the valve Taxes.
  • the lubricant used may be, in particular, the same lubricant that is also used for lubricating other components, for example for lubricating bearings for supporting the wheel hub on the wheel carrier or a transmission (for example a reduction gear between a drive shaft guided in the wheel carrier and the wheel hub).
  • the compressed air annulus and the lubricant annulus may be delimited by a sealing ring against each other (in the axial or radial direction).
  • a sealing ring against each other in the axial or radial direction.
  • To delimit the compressed air annulus and / or the lubricant annulus of the respective annulus is in particular in two opposite Directions (corresponding to the extent of the gap formed between the wheel and the wheel hub) delimited by a respective sealing ring with respect to the remaining space.
  • the use of sealing rings, which may in particular be radial shaft seals, in such an arrangement ensures reliable sealing of the respective annular spaces, is structurally simple and enables a compact rotary feedthrough.
  • the sealing effect of the compressed air annulus limiting respective sealing ring is controllable such that by increasing the pressure of a located in the lubricant annulus lubricant, a pressing force of the sealing ring relative to the wheel carrier or the wheel hub is increased.
  • the sealing rings can be "switchable", so to speak. This means that on the pressure of the lubricant, the pressure force of respective sealing rings and thus their respective sealing effect on the one hand and resulting wear on the other hand can be selectively adjusted.
  • the pressing force can be temporarily changed to temporarily adjust the sealing effect of the sealing rings.
  • a relatively low normal pressure of the lubricant may be sufficient for a sealing ring provided between the compressed-air annular space and a respective lubricant annulus to reliably seal these annular spaces against each other with minimal wear.
  • the pressure of the compressed air decreases again, the pressure of the lubricant and thus the pressure force can be reduced again to minimize the dependent of the pressing force wear of the sealing rings.
  • the gap formed between the wheel carrier and the wheel hub may extend from the wheel carrier to the wheel hub in the radial direction, in which case the compressed air annulus and the respective lubricant annulus are sealed against each other in the axial direction.
  • said gap extends from the wheel carrier to the wheel hub in the axial direction, wherein the compressed-air annulus and the respective lubricant annulus are sealed in the radial direction against each other.
  • exactly one communicating with a compressed air channel of the wheel hub compressed air annulus is formed in said space between the wheel carrier and the wheel hub.
  • further compressed air annular spaces can be provided for additional supply of the same compressed air duct or further compressed air ducts of the wheel hub.
  • a particularly compact overall depth of the rotary feedthrough, however, is achieved in that only exactly one such compressed air annular space is provided.
  • the wheel hub has exactly one compressed air channel which communicates with the compressed air annular space formed in said intermediate space.
  • the wheel hub may also have other compressed air ducts supplied across the said gap for other purposes.
  • a rotary feedthrough in which only a compressed air channel is provided in the wheel hub in contrast, has a simpler structure.
  • a plurality of lubricant annular spaces communicating with the lubricant channel of the wheel carrier may be formed in the intermediate space between the wheel carrier and the wheel hub.
  • the compressed air annulus to his adjacent to both sides of a respective lubricant annulus and sealed in this way reliable.
  • the respective lubricant annular spaces are supplied together with lubricant via the mentioned lubricant channel of the wheel carrier.
  • a plurality of lubricant annular spaces can also be formed in said intermediate space between the wheel carrier and the wheel hub, which communicate with a respective own lubricant channel of the wheel carrier.
  • the wheel carrier can therefore also have a plurality of lubricant channels for supplying respectively different lubricant annular spaces.
  • the lubricant channel of the wheel hub can be connected to the control port of the valve directly or via a pressure conversion device. Whether a pressure conversion device is required depends on the valve used and in particular its control connection. If the control port of the valve is suitable, To convert hydraulic pressures directly into respective switching states of the valve, the lubricant channel of the wheel hub can be connected directly to the control terminal, so that can be dispensed with a pressure conversion device. In contrast, it may be advantageous to use particularly simple and widely used mechanically switchable valves, such as 2/2 or 3/2-way valves.
  • a pressure conversion device can be interposed, which is the input side connected to the lubricant channel of the wheel hub and the hydraulic pressure of the lubricant on the output side in a mechanical movement, such as a piston or plunger, converts, through which the control terminal the valve is then actuated.
  • two lubricant annular spaces are formed in said intermediate space between the wheel carrier and the wheel hub, wherein the compressed-air annular space is formed between the two lubricant annular spaces.
  • the compressed air annulus is flanked on its two sides by a lubricant annulus and sealed in this way reliable.
  • the rotary feedthrough has four sealing rings, wherein each of the two lubricant annular spaces is bounded on both sides by one of the four sealing rings, wherein the compressed air annulus is bounded on both sides by the two middle of the four sealing rings.
  • the four sealing rings eg, in axial or radial sequence
  • a total of three rooms namely centrally the compressed air annulus and on both sides for this purpose each a lubricant annulus.
  • the sealing rings ensure the seal in particular between the lubricant annular spaces and the compressed air annulus.
  • the compressed air annular space can be formed axially between the two lubricant annular spaces, wherein the compressed air annulus and the two lubricant annular spaces in the axial Direction are limited by the sealing rings.
  • each of said four sealing rings is formed as a radial shaft sealing ring having an open front and a closed, extending in the radial direction back, wherein the open front of each radial shaft sealing ring facing one of the two lubricant annular spaces is.
  • the radial shaft sealing ring may be formed substantially "U" -shaped, so that the back forms the base of the "U” from which the legs of the "U” point axially away, and the open front side is formed by the region between the leg ends ,
  • the pressing force of the wheel carrier side and / or the wheel hub side leg of such a radial shaft seal may advantageously be dependent on the pressure at the open front of the radial shaft seal. In this way, the pressure force and thus the sealing effect of the radial shaft sealing ring can be adapted to the respective pressure within the back adjacent compressed air annulus by pressure changes within the respective lubricant annulus to achieve a sufficient sealing effect at the lowest possible wear.
  • wheel carrier and “hub” do not necessarily refer to a single component, but refer to the particular arrangement of fixedly interconnected parts, since both the Radisme and the hub can of course also be made of several parts.
  • the wheel carrier may also include an exchangeable wear sleeve on which the sealing rings sealing a respective compressed air annulus or lubricant annulus will slide, as will be explained with reference to the figures.
  • FIG.1 a part of a rotary feedthrough in axial section.
  • FIG. 2 and 3 are detailed views of the upper part and the lower part of the Fig. 1 ,
  • the rotary feedthrough shown comprises a wheel carrier with a steering knuckle 11, on which a wheel hub 13 is rotatably mounted with respect to a rotation axis A.
  • This storage is accomplished via two rolling bearings 15, 15 ', which are designed here as tapered roller bearings.
  • a compressed-air channel 17 is provided in the steering knuckle 11 (see the upper part of FIG Fig. 1 such as Fig. 2 ) connected to a compressed air source (not shown).
  • This compressed air channel 17 communicates with a compressed air channel 19 of the wheel hub 13, which opens to a compressed air connection 27 of a valve 25, which is arranged on the relevant wheel, in particular on the wheel hub 13 or rim.
  • the compressed air channels 17, 19 are via a compressed-air annular space 21 which is formed in the radial gap between the steering knuckle 11 and the hub 13, regardless of the rotational position of the hub 13 relative to the steering knuckle 11 and in principle also during rotation of the hub 13 with each other connected. In this way, compressed air from the compressed air source can be supplied to the valve 25 through the compressed air channels 17, 19 in order to increase the air pressure in the tire.
  • a pressure drop in the tire is in corresponding manner possible, wherein the air from the tire is either supplied to the compressed air source (which of course presupposes a pressure gradient in the direction of the compressed air source) or is discharged into the environment (for which the valve 25, however, as a 3/2-way valve with a vent port and a vent channel in the wheel hub 13, not shown).
  • the valve 25 shown is a controllable 2/2-way valve, which can optionally be blocked or controlled via a control connection 31, to let compressed air from the compressed air connection 27 to a working connection 29 (in the direction of the arrow) pass.
  • the working port 29 is in communication with the interior of the tire, so that the tire with compressed air from the compressed air channels 17, 19 can be filled.
  • the valve 25 is biased in a locking state.
  • Axially adjacent to said compressed air annular space 21 for connecting the compressed air channels 17, 19 is on both sides of a respective lubricant annulus 22, 22 'is formed (see, the lower part of Fig. 1 such as Fig. 3 ), which is sealed off from the compressed-air annular space 21 by sealing rings 23, 23 '.
  • the sealing rings 23, 23 ' are designed as radial shaft seals with an open front and a closed, extending in the radial direction back.
  • Each of the radial shaft sealing rings 23, 23 ' is - based on the axial section shown - substantially "U" -shaped, wherein the open front side facing the respective lubricant annulus 22, 22'.
  • the respective radial shaft sealing ring 23, 23 ' is connected to one leg of the "U" (a radially outer seat) on an inner circumferential surface of the wheel hub 13 non-positively and thus against rotation.
  • the other leg of the "U” (a radially inner sealing surface) facing the steering knuckle 11 and is sealingly on a cylindrical running surface of an optional wear sleeve 33, which is firmly connected to the steering knuckle 11.
  • a wear sleeve 33 has the advantage that not the entire wheel carrier must be replaced when the seal running surfaces have run, but that it is sufficient to replace only the wear sleeve 33. Furthermore, the wear sleeve 33 offers the advantage of easy machinability. Alternatively to the use of the wear sleeve 33, the radial shaft seals 23, 23 ', however, can also be arranged directly on the steering knuckle 11.
  • a lubricant passage 18 which is directly or indirectly connected at one end to a source of lubricant (not shown, eg pump or pneumatic-hydraulic pressure converter within a substantially closed lubricant circuit).
  • a source of lubricant not shown, eg pump or pneumatic-hydraulic pressure converter within a substantially closed lubricant circuit.
  • the lubricant channel 18 communicates with the lubricant annular spaces 22, 22 'and supplies them with lubricant, such as lubricating oil.
  • the pressure of the lubricant in the lubricant annular spaces 22, 22 ' can be adjusted in order to adapt the pressure force of the sealing rings 23, 23' to the wear sleeve 33.
  • the pressure in the lubricant annular spaces 22, 22 ' can be temporarily increased, although the pressure in the compressed air annulus 21 is increased to fill the tire. In this way, one can adapt to the situation adapted reliable sealing of the compressed air annulus 21 can be achieved with minimal wear.
  • a lubricant passage 20 is provided in the wheel hub 13, which communicates with one of the lubricant annular spaces 22, 22 ', so that the lubricant passage 18 of the steering knuckle 11 and the lubricant passage 20 of the wheel hub 13 via the lubricant annulus 22 are interconnected.
  • the lubricant passage 20 of the wheel hub 13 opens to the control port 31 of the valve 25.
  • control port 31 of the valve 25 may be directly connected to the lubricant channel 20 if it is suitable for directly evaluating the pressure of the lubricant in the lubricant channel 20 and converting it into a respective state of the valve 25.
  • a pressure conversion device (not shown) may be provided by which the hydraulic pressure of the lubricant in the lubricant passage 20 is converted into a mechanical actuation of the control port 31 of the valve 25.
  • the other lubricant annulus 22 at the same time also has a complementary function. Namely, lubricant can be transmitted to the lubricant passage 20 of the wheel hub 13 via this lubricant annulus 22, independently of the rotational position of the wheel hub 13 relative to the steering knuckle 11, on the same principle as in the compressed air annulus 21. so that the lubricant channels 18, 20 of the steering knuckle 11 and the wheel hub 13 communicate permanently via the lubricant annulus 22 with each other.
  • the tire pressure control can indeed be carried out two-channel.
  • a lubricant channel 20 is formed, of one of the sealing of the compressed air annulus 21st provided lubricant annular spaces 22, 22 'can be supplied with lubricant anyway.
  • the lubricant used for the lubrication of the roller bearings 15, 15 ' is used for the control of the valve 25.
  • the clearance formed between the wheel carrier 11 and the wheel hub 13 can deviate from the representation in the drawings, starting from the wheel carrier 11 to the wheel hub 13 in an axial direction, in which case the compressed air annulus 21 and the respective lubricant Annular space 22, 22 'are sealed in the radial direction against each other.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rolling Contact Bearings (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Claims (14)

  1. Passage tournant pour une roue de véhicule automobile avec système de contrôle de pression de gonflage, comportant un support de roue (11) et un moyeu de roue (13) monté rotatif sur le support de roue (11), dans lequel un espace annulaire à air comprimé (21) et au moins un espace annulaire à lubrifiant (22, 22') étanchés l'un par rapport à l'autre sont réalisés dans un intervalle entre le support de roue (11) et le moyeu de roue (13),
    et l'espace annulaire à air comprimé (21) est en communication avec un canal à air comprimé (17) du support de roue (11) et avec un canal à air comprimé (19) du moyeu de roue (13),
    dans lequel le canal à air comprimé (19) du moyeu de roue (13) est en outre en communication avec une vanne commandée (25) pour gonfler à l'air comprimé ou dégonfler au choix un pneumatique de la roue de véhicule automobile, et
    dans lequel l'espace annulaire à lubrifiant (22, 22') est en communication avec un canal à lubrifiant (18) du support de roue (11),
    caractérisé en ce que
    l'espace annulaire à lubrifiant (22, 22') est en outre en communication avec un canal à lubrifiant (20) du moyeu de roue (13), qui mène vers un raccord de commande (31) de la vanne (25), afin de piloter au choix la vanne (25) pour laisser passer de l'air comprimé.
  2. Passage tournant selon la revendication 1,
    caractérisé en ce que
    l'espace annulaire à air comprimé (21) et l'espace annulaire à lubrifiant (22, 22') sont délimités l'un par rapport à l'autre par un anneau d'étanchéité (23, 23').
  3. Passage tournant selon la revendication 2,
    caractérisé en ce que
    l'espace annulaire à air comprimé (21) et/ou l'espace annulaire à lubrifiant (22, 22') sont délimités par rapport au reste de l'intervalle entre le support de roue (11) et le moyeu de roue (13) dans deux directions mutuellement opposées par un anneau d'étanchéité respectif (23, 23', 24, 24').
  4. Passage tournant selon la revendication 2 ou 3,
    caractérisé en ce que
    l'effet d'étanchéité de l'anneau d'étanchéité (23, 23') délimitant l'espace annulaire à air comprimé (21) est commandable de telle sorte qu'une augmentation de la pression du lubrifiant situé dans l'espace annulaire à lubrifiant (22, 22') provoque une augmentation de la force de pressage de l'anneau d'étanchéité (23, 23') par rapport au support de roue (11) ou au moyeu de roue (13).
  5. Passage tournant selon l'une des revendications précédentes,
    caractérisé en ce que
    l'intervalle s'étend du support de roue (11) jusqu'au moyeu de roue (13) en direction radiale, et l'espace annulaire à air comprimé (21) et l'espace annulaire à lubrifiant (22, 22') sont étanchés l'un vis-à-vis de l'autre en direction axiale.
  6. Passage tournant selon l'une des revendications précédentes,
    caractérisé en ce que
    dans l'intervalle entre le support de roue (11) et le moyeu de roue (13) est réalisé précisément un espace annulaire à air comprimé (21) qui est en communication avec le canal à air comprimé (19) du moyeu de roue.
  7. Passage tournant selon l'une des revendications précédentes,
    caractérisé en ce que
    le moyeu de roue (13) comprend précisément un canal à air comprimé (19) qui est en communication avec l'espace annulaire à air comprimé (21).
  8. Passage tournant selon l'une des revendications précédentes,
    caractérisé en ce que
    dans l'intervalle entre le support de roue (11) et le moyeu de roue (13) sont réalisés plusieurs espaces annulaires à lubrifiant (22, 22') qui sont en communication avec le canal à lubrifiant (17) du support de roue (11) ou avec un canal à lubrifiant respectif propre du support de roue.
  9. Passage tournant selon la revendication 8,
    caractérisé en ce que
    précisément un (22) des espaces annulaires à lubrifiant ou plusieurs des espaces annulaires à lubrifiant est/sont en communication avec le canal à lubrifiant (20) du moyeu de roue (13).
  10. Passage tournant selon l'une des revendications précédentes,
    caractérisé en ce que
    le canal à lubrifiant (20) du moyeu de roue (13) est relié au raccord de commande (31) de la vanne (25) soit directement soit via un dispositif convertisseur de pression.
  11. Passage tournant selon l'une des revendications précédentes,
    caractérisé en ce que
    deux espaces annulaires à lubrifiant (22, 22') sont réalisés dans l'intervalle entre le support de roue (11) et le moyeu de roue (13), et l'espace annulaire à air comprimé (21) est réalisé entre les deux espaces annulaires à lubrifiant (22, 22').
  12. Passage tournant selon la revendication 11,
    caractérisé en ce que
    le passage tournant comprend quatre anneaux d'étanchéité (23, 23', 24, 24'), chacun des deux espaces annulaires à lubrifiant (22, 22') étant délimité de part et d'autre par l'un des quatre anneaux d'étanchéité (23, 23', 24, 24'), l'espace annulaire à air comprimé (21) étant délimité de part et d'autre par les deux anneaux médians (23, 23') des quatre anneaux d'étanchéité.
  13. Passage tournant selon la revendication 12,
    caractérisé en ce que
    l'intervalle s'étend du support de roue (11) jusqu'au moyeu de roue (13) en direction radiale, l'espace annulaire à air comprimé (21) étant réalisé axialement entre les deux espaces annulaires à lubrifiant (22, 22'), et l'espace annulaire à air comprimé (21) et les deux espaces annulaires à lubrifiant (22, 22') sont délimités en direction axiale par les anneaux d'étanchéité (23, 23', 24, 24').
  14. Passage tournant selon la revendication 12 ou 13,
    caractérisé en ce que
    chacun des quatre anneaux d'étanchéité (23, 23', 24, 24') est réalisé sous la forme d'un anneau d'étanchéité radial pour arbre, qui comprend un côté avant ouvert et un côté arrière fermé s'étendant en direction radiale, le côté avant ouvert de chaque anneau d'étanchéité radial pour arbre étant tourné vers l'un des deux espaces annulaires à lubrifiant (22, 22').
EP15168971.8A 2014-06-06 2015-05-22 Passage tournant pour roue de véhicule Active EP2952365B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014108028.9A DE102014108028B3 (de) 2014-06-06 2014-06-06 Drehdurchführung für ein Kraftfahrzeugrad

Publications (3)

Publication Number Publication Date
EP2952365A2 EP2952365A2 (fr) 2015-12-09
EP2952365A3 EP2952365A3 (fr) 2016-01-06
EP2952365B1 true EP2952365B1 (fr) 2016-12-14

Family

ID=53191576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15168971.8A Active EP2952365B1 (fr) 2014-06-06 2015-05-22 Passage tournant pour roue de véhicule

Country Status (4)

Country Link
US (1) US9499015B2 (fr)
EP (1) EP2952365B1 (fr)
DE (1) DE102014108028B3 (fr)
RU (1) RU2669879C2 (fr)

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CN111194268A (zh) * 2017-10-05 2020-05-22 斯太姆科产品公司 为了增强轮端组件的润滑的间隔件

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CN106715162B (zh) * 2014-10-01 2019-04-09 宝马股份公司 用于对车辆车轮供应压缩空气的组件
EP3208118A1 (fr) * 2016-02-19 2017-08-23 DANA ITALIA S.r.l. Ensemble de traversée rotative pour un système de gonflage de pneu
EP3426501B1 (fr) * 2016-03-11 2020-01-29 Volvo Truck Corporation Agencement de palier et procédé d'assemblage d'un agencement de palier à un moyeu
US11254170B2 (en) * 2017-04-13 2022-02-22 Tesla, Inc. Automatic tire inflation system with thru-hub air feed
IT201700085893A1 (it) * 2017-07-27 2019-01-27 Trelleborg Wheel Sys Italia Spa Collettore rotante e sistema di regolazione della pressione di pneumatici.
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DE102017127427B3 (de) * 2017-11-21 2019-04-25 Gapi Technische Produkte Gmbh Dichtungsanordnung für eine Drehdurchführung eines Radlagers eines Kraftfahrzeugs
BR112021009661A2 (pt) * 2018-11-21 2021-08-17 Consolidated Metco, Inc. aparelho de extremidade de roda com gerador elétrico
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CN111194268A (zh) * 2017-10-05 2020-05-22 斯太姆科产品公司 为了增强轮端组件的润滑的间隔件

Also Published As

Publication number Publication date
RU2015121689A (ru) 2016-12-27
EP2952365A2 (fr) 2015-12-09
RU2015121689A3 (fr) 2018-08-30
EP2952365A3 (fr) 2016-01-06
RU2669879C2 (ru) 2018-10-16
US20150352911A1 (en) 2015-12-10
US9499015B2 (en) 2016-11-22
DE102014108028B3 (de) 2015-09-24

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